Method of lubricating perforator presses



Oct. 29, 1929. J. T. WRIGHT METHOD OF LUBRICATING PERFORATOR PRESSES 2Filed- Aug. 17, 1927 Patented Oct. 29, 1929 UNITED STATES PAra rhormone.

.rosnrn r. WRIGHT, or CINCINNATI, OHIO, ASSIGNOR TO THE J. r. WRIGHTCOMPANY,

or CINCINNATI, OHIO, A CORPORATION or OHIO METHOD or LoBItIcArINernIFoRAron r anssns Application filed August 17, 1927. Serial No. 213,665.I

This invention relates to a method of lubricating a plurality of punchpins of a line perforating machine, whereby the shank portion of thepins in their reciprocating motions are constantly lubricated at a pointabove the perforating or cutting extremities thereof to lubricate itssurface guidingly moving within apertures in a stripperbar and to adegree which will not result in a 0 distribution of the lubricant to thecutter or die ends of the perforator pins which if permitted would beconveyed to and soil the paper perforated.

An object of the invention is to provide a lubricating pad injuxtaposition to a line or row of perforator punch pins to engage theshank portions thereof and preferably disposing the pad longitudinallywithin a guide or stripper bar through which the perforator pins pass.

Further advantages and features of the invention will be more fully setforth in the description of the accompanying drawings illustratingfurther embodiments of the invention, in which: 7

Figure 1 is a sectional perspective view of a perforator or punchcarrying cross head and a top View of the work supporting table of aperforator press of conventional type with the improved method oflubricating the perforator pins incorporated.

Figure 2 is an enlarged cross section through the horizontal stripperbar through which the perforator pins pass and are reciprocated.

Referring to the drawings, 1 indicates the table of a conventional typeof perforator press carrying a die plate 2 which is removably recessedin the table and for line perforating is provided with a row ofapertures or die holes 3 appropriately spaced for cooperation with thepunch or perforator pins or needles 4 dependingly sustained from areciprocating cross head 5. The cross head 5 is guidingly mounted at itsopposite ends above the table and reciprocated in any well known manner,detailed illustration thereof not being made herein as it does notconcern the present invention.

The punch or perforator pins each are headed and socketed within aretaining bar 6 preferably of angle form fixed to the cross head andheld against longitudinal displacement by a clamping or backing bar 7held in place by a series of thumb screws 9, the mount- 5 ing of theneedles or pins upon the cross heads following the prevailing methods.

A stationary cross or bridge bar 10 extends overand is spaced from thetable in rear of the cross head providing a rigid support 66 for astripper bar 11 which extends forwardly between the cross head andtable, its forward end being oflset and apertured, the aperturesguidingly receiving the perforator pins to maintain their alignment withthe apertures of the die plate. The ofiset at the forward end of thestripper bar provides a ledge and shoulder in rear of the perforatorpins serving as a pocket for holding a wick or lubricating pad 12bearing against the rear side ('6 of the perforator pins immediatelyabove the guioleapertures on the stripper bar for administering thelubricant with the reciprocating action of the pins to the rear sides ofthe pins and to a degree which will not result 7.5 in any of thelubricant being conveyed to the cutting or die extremities and carriedto the paper to be perforated which would soil the paper. The padengaging the rear or only a small portion of the circumference of goeach of the pins thus distributes a minute quantity of lubricant uponthe pin surface so as to sufiiciently lubricate the shank portionssliding within the apertures in the stripper bar relieving the pins offriction and g5 wear in their reciprocating motion through the bar, asany perceptible wear of the pins or guide apertures destroys thealignment and registration of the pins with the aperv tures in the dieplate, resulting in punching a so ragged and oblong hole. 7

Having described my invention, I claim:

1. In a machine of the class described, a reciprocating cross head, oneor more perforator pins dependingly sustained from said T cross head, astationary stripper bar beneath the cross head having aperturestherethrough for guiding the perforator pins, and a lubricantdistributing pad mounted on said stripper above the pin guidingapertures and bear- 1 00 ing against the shank portion of the pins forIn ricating the pins in their reciprocating action at a point above thecutting ends of the p 2. In a machine of the class described, areciprocating cross head, perforator pins dependingly sustained fromsaid cross head, a stationary stripper bar beneath the cross head havingapertures therethrough for guiding the perforator pins, and a lubricantdistributing pad mounted within said stripper and bearlng against saidperforator pins.

, In Witness whereof, I hereunto subscribe m name.

' JOSEPH T. WRIGHT.

